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// Copyright (c) 2019-2020 The Bitcoin Core developers
// Distributed under the MIT software license, see the accompanying
// file COPYING or http://www.opensource.org/licenses/mit-license.php.
#include <test/util/mining.h>
#include <chainparams.h>
#include <consensus/merkle.h>
#include <key_io.h>
#include <node/context.h>
#include <node/miner.h>
#include <pow.h>
#include <script/standard.h>
#include <test/util/script.h>
#include <util/check.h>
#include <validation.h>
#include <versionbits.h>
CTxIn generatetoaddress(const NodeContext& node, const std::string& address)
{
const auto dest = DecodeDestination(address);
assert(IsValidDestination(dest));
const auto coinbase_script = GetScriptForDestination(dest);
return MineBlock(node, coinbase_script);
}
std::vector<std::shared_ptr<CBlock>> CreateBlockChain(size_t total_height, const CChainParams& params)
{
std::vector<std::shared_ptr<CBlock>> ret{total_height};
auto time{params.GenesisBlock().nTime};
for (size_t height{0}; height < total_height; ++height) {
CBlock& block{*(ret.at(height) = std::make_shared<CBlock>())};
CMutableTransaction coinbase_tx;
coinbase_tx.vin.resize(1);
coinbase_tx.vin[0].prevout.SetNull();
coinbase_tx.vout.resize(1);
coinbase_tx.vout[0].scriptPubKey = P2WSH_OP_TRUE;
coinbase_tx.vout[0].nValue = GetBlockSubsidy(height + 1, params.GetConsensus());
coinbase_tx.vin[0].scriptSig = CScript() << (height + 1) << OP_0;
block.vtx = {MakeTransactionRef(std::move(coinbase_tx))};
block.nVersion = VERSIONBITS_LAST_OLD_BLOCK_VERSION;
block.hashPrevBlock = (height >= 1 ? *ret.at(height - 1) : params.GenesisBlock()).GetHash();
block.hashMerkleRoot = BlockMerkleRoot(block);
block.nTime = ++time;
block.nBits = params.GenesisBlock().nBits;
block.nNonce = 0;
while (!CheckProofOfWork(block.GetHash(), block.nBits, params.GetConsensus())) {
++block.nNonce;
assert(block.nNonce);
}
}
return ret;
}
CTxIn MineBlock(const NodeContext& node, const CScript& coinbase_scriptPubKey)
{
auto block = PrepareBlock(node, coinbase_scriptPubKey);
while (!CheckProofOfWork(block->GetHash(), block->nBits, Params().GetConsensus())) {
++block->nNonce;
assert(block->nNonce);
}
bool processed{Assert(node.chainman)->ProcessNewBlock(Params(), block, true, nullptr)};
assert(processed);
return CTxIn{block->vtx[0]->GetHash(), 0};
}
std::shared_ptr<CBlock> PrepareBlock(const NodeContext& node, const CScript& coinbase_scriptPubKey)
{
auto block = std::make_shared<CBlock>(
BlockAssembler{Assert(node.chainman)->ActiveChainstate(), *Assert(node.mempool), Params()}
.CreateNewBlock(coinbase_scriptPubKey)
->block);
LOCK(cs_main);
block->nTime = Assert(node.chainman)->ActiveChain().Tip()->GetMedianTimePast() + 1;
block->hashMerkleRoot = BlockMerkleRoot(*block);
return block;
}
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